Kensington Pro Fit Ergonomic Wireless Keyboard and Mouse - Grey (K75407US) The ergonomist-approved Pro fit Ergo wireless keyboard positions your hands for improved comfort. A split and sloped keyboard with adjustable reverse tilt positions your hands, wrists, and forearms for comfort and neutral alignment. Its built-in wrist rest supports, cushions, and cradles the wrists. Dual wireless with 128-bit AES encryption delivers the flexibility of 2. 4 GHz and Bluetooth 4. 0 LE, with government-grade encryption. Keys are quiet and spill-proof, for smooth typing and easy cleanup. The receiver is replaceable, so if it's ever lost or damaged, simply purchase a new one, pair it with your mouse, and you're all set. A Three-mode power-saving switch enables best battery life, while popular features such as caps lock, numbers lock, scroll lock, and f-keys make typing more efficient. Features Split and sloped keyboard with adjustable reverse tilt positions hands, wrists, and forearms for comfort and neutral alignment. Dual wireless with 128-bit AES encryption security delivers the flexibility of 2. 4 GHz and Bluetooth 4. 0 LE, with Government-grade encryption. Quiet clicking means typing and Mousing is smooth, easy, and non-disruptive. Spill-proof keys make cleanup fast and easy. Three-mode power-saving switch allows you to toggle between 2. 4GHz, Bluetooth, and off for best battery life. Fast and Free Shipping You're already purchasing the item. Why pay additional for shipping, especially slow shipping? We get your order shipped out within 1-business day and delivered to your doorstep as quickly as possible. Competitive Pricing With our dynamic pricing model, our prices are always competitive. Our prices are some of the lowest that you will find on the internet. Rest assured that you're getting a good deal when purchasing with us. 30-day Money Back Guarantee We are committed to making sure that you leave this transaction satisfied. If you're unhappy with the product for any reason, you may return it back for your money-back or a replacement within 30 days. No questions asked!